💚 ci: labeling, testing and other updates

[nstarman]

No description provided.

[Copilot]

Pull request overview

This PR is a repo-maintenance update focused on standardizing configuration formatting, adjusting Nox/CI orchestration, and adding GitHub automation for labels/releases.

Changes:

• Reformat and reorganize pyproject.toml (dependency groups, tool configs, hatch/codespell config tweaks).
• Update noxfile.py to be runnable via uv run --script, add default sessions, and switch meta-sessions to s.notify(...).
• Add label automation (labeler + label sync), release note categorization config, and tweak CI install/test commands.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
pyproject.toml	Reorders/realigns project + tool configuration and dependency groups; adds hatch vcs template.
noxfile.py	Adds PEP 723 script header and changes lint/test sessions to notify sub-sessions; adds __main__ entrypoint.
.taplo.toml	Introduces Taplo formatting rules for TOML files.
.pre-commit-config.yaml	Adjusts codespell args and adds Taplo formatter hook.
.github/workflows/ci.yml	Changes uv sync usage and consolidates test execution through the test nox session.
.github/workflows/sync-labels.yml	New workflow to sync repo labels from .github/labels.yml.
.github/workflows/labeler.yml	New workflow to auto-label PRs based on path rules.
.github/release.yml	Adds release-drafter style label-to-changelog category mapping.
.github/labels.yml	Defines the label set to be synced into the repo.
.github/labeler.yml	Defines path-based auto-label rules for PRs.
.github/CODEOWNERS	Requires maintainers review for .github/ changes.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.98%. Comparing base (3f439ad) to head (ede8e78).
⚠️ Report is 144 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (3f439ad) and HEAD (ede8e78). Click for more details.

HEAD has 5 uploads less than BASE

Flag	BASE (3f439ad)	HEAD (ede8e78)
	6	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #172       +/-   ##
===========================================
- Coverage   90.20%   54.98%   -35.22%     
===========================================
  Files          18       19        +1     
  Lines         582      391      -191     
===========================================
- Hits          525      215      -310     
- Misses         57      176      +119     

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